Lenstool lens models employing the 85 brightest member galaxies, system 1 of Table 1 and systems 2–11 of Zitrin et al. (2009), and one large-scale PIEMD dark matter halo (left), and two large-scale PIEMD dark matter halos (centre), and three large-scale PIEMD dark matter halos (right). The critical curves determined by the marching squares algorithm (see Appendix A for its configuration) are marked in red, the caustics in yellow and the multiple images in the notation of Zitrin et al. (2009) in blue.
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